In a tweet on Wednesday, Sen. Ron Wyden of Oregon said: “I expect that Senator Franken will announce his resignation tomorrow.” Wyden tweeted that “It is the right thing to do given this series of serious allegations.”

Franken’s support among his fellow Democrats is collapsing as a host of female Democratic senators called upon him to quit.

Sen. Kirsten Gillibrand wrote on Facebook that while Franken is entitled to have the Ethics Committee conclude its review, “I believe it would be better for our country if he sent a clear message that any kind of mistreatment of women in our society isn’t acceptable by stepping aside to let someone else serve.”

Sens. Mazie Hirono of Hawaii, Maggie Hassan of New Hampshire, Patty Murray of Washington state and Claire McCaskill of Missouri joined Gillibrand in pressing for Franken to quit.

The calls came as another woman accused Franken of sexual misconduct in an account to Politico.